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Crossref Stats Page: Updated on Jun 13, 2021

MetaData Deposit
Total Records in Database125,980,925
Total Prefixes20,652
Number of Journals91,710
Number of Books1,595,300
Number of Conference Proceedings80,259
Number of Journal DOIs89,667,908
Number of Book DOIs19,917,050
Number of Conference DOIs6,878,049
Number of Components4,966,976
Number of Standards Titles419,312
Number of Standards DOIs329,991
Number of Databases57,687
Number of Database DOIs2,179,288
Number of Articles with References Deposited51,778,057
Number of Cited-By Links1,186,422,432
Number of DOIs with at least one cited-by link (UNDER CONSTRUCTION)0
Number of Journal Title Level DOIs 42,701
Number of Book Title Level DOIs 1,615,395
Number of ConfProc Title Level DOIs 51,014
Number of Dissertation Title Level DOIs 382,348
Number of Report Title Level DOIs 679,732
Number of Standards Title Level DOIs 329,426
Number of Database Title Level DOIs 32,054
Number of Unique DOIs with FundRef data 2,947,660

Monthly Deposit Data

MonthTotal Records
Added
Total Current
Deposits
Total BackFile
Deposits
Total Records
Updated
(2018)9,874,1177,617,9912,256,12639,854,067
(2019)11,118,4618,583,2982,535,16350,533,616
(2020)12,462,5449,986,0052,476,53945,287,268
May887,638776,319111,3193,292,255
Jun927,909803,147124,7623,299,087
Jul1,047,460834,077213,3833,126,547
Aug873,497757,483116,0143,594,187
Sep1,103,079886,336216,7434,817,711
Oct997,236855,383141,8534,543,142
Nov1,062,042886,381175,6613,539,017
Dec1,371,421859,514511,9074,895,536
Jan1,044,509813,429231,0804,375,380
Feb969,590813,687155,9034,338,423
Mar1,283,413944,477338,9365,327,406
Apr1,055,832807,704248,1286,289,466
May1,041,893837,705204,1884,464,162
Jun580,691382,091198,6002,335,212


Monthly Query Data

MonthTotal MetaData
Queries
Total Matches%% by group
( Lib Pub Aflt )
Total DOI
Queries
Total Matches %
(2018)2194087319754,970,92334%51%43%43%1,823,393,3791,738,885,21895%
(2019)1,656,796,256783,711,58547%53%51%51%1,848,492,2611,716,370,97493%
(2020)1,523,069,914710,874,30447%48%49%49%1,590,084,0451,472,849,57693%
May143,139,28463,945,82845%51%44%78%141,096,791123,061,48387%
Jun147,525,80665,279,79544%50%43%74%124,779,394115,747,95293%
Jul131,115,28853,047,04940%47%40%67%122,865,216113,416,05792%
Aug142,863,13358,173,66241%48%48%70%116,270,019107,984,50493%
Sep123,549,99153,716,33243%48%53%71%140,308,115132,193,10594%
Oct119,202,20356,468,55047%46%54%66%145,576,877135,433,72593%
Nov111,306,54754,660,27349%43%51%65%145,617,216135,673,31193%
Dec105,326,79357,244,36754%42%52%63%125,425,079116,414,04793%
Jan123,512,84966,697,94754%42%47%73%132,310,968123,986,37694%
Feb104,387,79352,993,71051%43%51%66%126,697,909119,941,82795%
Mar125,916,24665,210,08652%45%40%68%196,377,049188,252,07696%
Apr124,028,98866,543,22354%44%47%71%198,452,792189,377,57795%
May130,660,01366,041,06551%42%54%71%198,853,578190,416,45596%
Jun60,234,79130,352,55550%42%45%55%77,989,43074,790,91496%


Monthly ORCID Auto-Update Data

MonthAuthors Granting
Permission
Works Added to
Authors Records
May58,376197,824
Jun47,687199,486
Jul40,043197,785
Aug57,368211,201
Sep51,720217,345
Oct45,021213,521
Nov50,277212,989
Dec49,444219,210
Jan54,164231,651
Feb53,053230,211
Mar60,012280,862
Apr54,755242,060
May60,069255,426
Jun32,903121,243

ORCID Totals

StatisticTotal
Total orcid/article pairs11,519,731
Total unique orcids3,550,283
Total works pushed6,515,131
Authors granting1,773,673
Authors denying661,259
Authors not responding1,134,142